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Average Ratings 0 Ratings

Total
ease
features
design
support

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Write a Review

Description

Coldletter is an email design and automation layer that helps teams create, manage, and send product emails without replacing their existing email provider. It connects with delivery services such as SendGrid, Postmark, Amazon SES, Mailgun, Resend, and SparkPost, giving companies flexibility while keeping sending infrastructure intact. The platform includes a visual editor where teams can build templates, add variables, reuse blocks, and preview emails across clients such as Gmail, Outlook, and Apple Mail. Every template is designed to be responsive, accessible, and safe for dark mode by default. Developers can trigger templates through a single API request while Coldletter handles rendering, data merging, routing, retries, suppression, and idempotency. Marketing, lifecycle, design, and product teams can use the platform to manage email content without constantly relying on engineering for every change. Journey automation tools allow users to create workflows based on events, schedules, engagement, attributes, or A/B testing paths. Version control, template diffs, rollbacks, localization, test sends, roles, approvals, and analytics help teams manage production emails with more confidence. Coldletter gives organizations a structured way to build polished product emails while improving collaboration between technical and non-technical teams.

Description

Customize your emails by including any desired fields sourced from Google Sheet columns, while also tracking when emails are opened and monitoring link clicks within those messages. Take advantage of email templates that can be created and utilized directly in Gmail, and assess the effectiveness of these templates through performance tracking. Design aesthetically pleasing templates suitable for newsletters or outreach efforts, and incorporate variables for a personalized touch in your emails. With MergeMail, you can seamlessly connect with over 1,500 different tools via Zapier, including integrations with popular platforms like Salesforce, HubSpot, Google Sheets, and Slack. Preview your emails for accuracy and maintain full confidence in your content before dispatching, while providing recipients with the option to opt out of future communications. On our Premium and Team plans, you can send unlimited emails through Delivery Integrations, utilizing your own email service to ensure complete control over your communications. Evaluate the success of various campaigns and templates, and keep track of conversion rates through automatic UTM codes. You can also easily share templates and campaigns with your team members, and simply place a link or image in a designated column to use it as a variable for further customization. This comprehensive email management system empowers you to enhance your outreach efforts effectively.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

No images available

Screenshots View All

Integrations

Amazon SES Yes 
Gmail No 
Google Sheets No 
HubSpot Marketing Hub No 
Postmark Yes 
SendGrid Yes 
Slack No 
Zapier No 

Integrations

Amazon SES No 
Gmail Yes 
Google Sheets Yes 
HubSpot Marketing Hub Yes 
Postmark No 
SendGrid No 
Slack Yes 
Zapier Yes 

Pricing Details

$0
Free Trial No 
Free Version Yes 

Pricing Details

$12 per month
Free Trial No 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) Yes 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Optosoftware inc.

Founded

2025

Country

Canada

Website

coldletter.com

Vendor Details

Company Name

MergeMail

Founded

2019

Country

United States

Website

www.mergemail.co/features

Product Features

Email Marketing

A/B Testing No 
Artificial Intelligence No 
Auto-Responders No 
CAN SPAM Compliance No 
Customer Surveys No 
Drip Campaigns No 
Dynamic Content No 
Event Triggered Email No 
Image Library No 
Landing Pages/Web Forms No 
Mailing List Management No 
Mobile Optimized Emails No 
Reporting/Analytics No 
Subscriber Management No 
Template Management No 
WYSIWYG Email Editor No 

Email Template Design

A/B Testing No 
Code From Scratch No 
Drag & Drop Editing No 
Image Library No 
Import HTML Code No 
Mobile-Friendly / Responsive No 
Potential Issue Identification No 
Premade Templates No 
Proofing No 
Reporting / Analytics No 
Text Editor No 
Theme Editor No 

Product Features

Email Template Design

A/B Testing No 
Code From Scratch No 
Drag & Drop Editing No 
Image Library No 
Import HTML Code No 
Mobile-Friendly / Responsive No 
Potential Issue Identification No 
Premade Templates No 
Proofing No 
Reporting / Analytics No 
Text Editor No 
Theme Editor No 

Email Tracking

A/B Testing No 
Audience Segmentation No 
Campaign Management No 
Event-Based Notifications No 
Location Tracking No 
Team Management No 

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